In Philadelphia, 30 parks and recreation centers are outfitted with a small speaker called the Mosquito. It blares a constant, high-pitched ringing noise all night long — but one that only teenagers and young adults can hear. Michaela WinbergNPRWed, 10 Jul 2019 08:25 UTC In Philadelphia, 30 parks and recreation […]
Sonic weapons
Not sure we want to hit “play” on that. KEVIN LORIA, BUSINESS INSIDER 12 OCT 2017 The Associated Press has obtained and released audio of mysterious sounds that some US diplomats and families heard in Cuba before suffering hearing loss, mild traumatic brain injury, nervous system damage, and balance problems. […]